Cod sursa(job #3159515)

Utilizator DesqucuDesq Stef Desqucu Data 21 octombrie 2023 15:11:30
Problema Generare de permutari Scor 20
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.54 kb
#include <fstream>
using namespace std;
ifstream in("permutari.in");
ofstream out("permutari.out");
int v[12],n,s,N;
void afis()
{
    for(int i=1; i<=n; i++)
        out<<v[i]<<" ";
    out<<'\n';
}
void backtrack(int poz)
{
    for(int i=1; i<=n; i++)
    {
        v[poz]=i;
        s=s+i;
        if(poz==n)
        {
            if(s==N)
                afis();
        }
        else
            backtrack(poz+1);
        s=s-i;
    }
}
int main()
{
    in>>n;
    N=(n*(n+1))/2;
    backtrack(1);

    return 0;
}